Vibrating plate

Details Vibrating plate Vibrating plate

E - Fixed Constructions

01

C

E01C 19/38 (2006.01) E02D 3/046 (2006.01)

Patent

CA 2509069

The invention relates to a vibrating plate (1), with a baseplate (2), set in vibration by means of a driving device (9), with at least one bottom plate (3), an upper plate (4) and a cell structure (5), arranged between the bottom plate (3) and the upper plate (4) to reinforce the base plate (2), as support components. According to the invention, the support components form a baseplate (2) with a natural resonance frequency 2 to 5 times, preferably 3 to 4 times the frequency of the vibration thereof. The support components (3, 4, 5, 8) are thus welded together to form a self-supporting body, such as to give a particularly stiff and light baseplate (2). As a result of the above properties, said vibrating plate (1) is particularly suitable for compacting uniform sands and snow, for example in the preparation of ski pistes.

L'invention concerne un plaque vibrante (1) comportant une plaque de base (2) pouvant être mise en vibration par un dispositif d'excitation (9), qui comporte, comme composants de support, au moins une plaque de fond (3) et une plaque supérieure (4) entre lesquelles est disposée une structure cellulaire (5) rigidifiant cette plaque de base (2). Selon l'invention, les composants de support forment une plaque de base (2) dont la fréquence propre correspond à 5 fois, de préférence 3 à 4 fois la fréquence de ses vibrations. De façon opportune, les composants de support (3, 4, 5, 8) sont soudés ensemble pour former un corps autoportant, ce qui permet d'obtenir une plaque de base (2) particulièrement rigide et légère. La plaque vibrante (1) selon l'invention est, grâce à ces caractéristiques, d'une utilisation particulièrement avantageuse pour le compactage de sable et de neige uniforme, par exemple lors de la préparation de pistes de ski.

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